Do you know why so many people like to play event contracts? Is it because they come quickly, or because they are not so complicated, or is it exciting? Is it human nature? If it is human nature, then there needs to be a reasonable trading strategy plan, a useful strategy step to assist, such as Bollinger Bands +? I have a set of indicators + Bollinger Bands here, and everyone who has used them thinks they are useful, and the key is that they are free; can you just use them? It makes trading contracts even more powerful, you can give it a try.